Table 1.
Correlations among measures of substance use in teenage mothers
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Early tobacco use (< 12 yrs) | - | −.03 | .21** | .29** | .04 | .02 | .03 | .08 | .02 | .12* | −.01 | .03 |
| 2 | Early alcohol use (< 12 yrs) | - | - | −.07 | .01 | .02 | −.07 | .03 | .08 | .02 | −.02 | −.06 | −.05 |
| 3 | Early marijuana use (< 13 yrs) | - | - | - | .18** | −.02 | .32** | .07 | .10t | .09 | .07 | .05 | .11t |
| 4 | Tobacco use 1 yr < teen pregnancy | - | - | - | - | .15** | .38*** | −.09 | −.02 | .12* | .51*** | −.03 | .13* |
| 5 | Alcohol use 1 yr < teen pregnancy | - | - | - | - | - | .07 | −.11t | −.07 | .00 | .19** | .06 | .03 |
| 6 | Marijuana use 1 yr < teen pregnancy | - | - | - | - | - | - | −.01 | −.04 | −.00 | .27*** | .05 | .22*** |
| 7 | Tobacco use 6 yrs > teen pregnancy | - | - | - | - | - | - | - | .25*** | .09 | −.11t | .01 | .05 |
| 8 | Binge drinking 6 yrs > teen pregnancy | - | - | - | - | - | - | - | - | .15* | .01 | .02 | −.06 |
| 9 | Marijuana use 6 yrs > teen pregnancy | - | - | - | - | - | - | - | - | - | .02 | .03 | .00 |
| 10 | Tobacco use 10 yrs > teen pregnancy | - | - | - | - | - | - | - | - | - | - | .05 | .21*** |
| 11 | Binge drinking 10 yrs > teen pregnancy | - | - | - | - | - | - | - | - | - | - | - | .02 |
| 12 | Marijuana use 10 yrs > teen pregnancy | - | - | - | - | - | - | - | - | - | - | - | - |
t
N.B. p < .10,
*
p < .05,
**
p < .01,
***
p < .001